GMC 1993 Jimmy Owner's Manual page 171

4. Press the 1 and 4 buttons together. Hold them down until
I'-
-
-"
shows
on the display.
You are now ready to enter your secret code. Don't wait more than 15
seconds between steps.
5. Press SET and 000 will appear on the display.
6. Press the SEEK
b
button to make the first number appear.
7.
Rotate the TUNE knob right or left to make the last two numbers agree
with your code.
8. Press BAND and 000 will appear again. Now you are ready to enter the
last three digits of your code.
9. Repeat steps 6 and 7 for the last three digits of your code.
10. Press BAND and
rEP w i l l appear for 5 seconds and then
000 will
appear.
11. Repeat steps 6 through 10. This time
SEC
will appear-indicating that
the radio is secure.
To Unlock The System After A Power Loss
When battery power
is reapplied to
a
secured radio, the radio won't turn
on
and LOC will appear on the display.
Enter your secret code as follows: pause no more than 15 seconds between
steps.
1. Turn the ignition on. (Radio off .)
2. Depress the SET button. The display will show
000.
3. Enter the six digits'of the code following steps 6-9 above. The display
will show the numbers as entered.
4. Depress the BAND knob and the time appears-indicating that the dis-
abling sequence was successful. If the display indicates SEC, the num-
bers did not match and the unit is still secured.
Disabling The Theft System
1.
Depress presets
1
and 4 for 5 seconds with ignition on and radio power
off. The display will show SEC, indicating the unit is in the secure mode.
2. Depress the SET button. The display will show 000.
3. Enter the first three digits of the code following steps 6 and 7 of the
preceding paragraphs. The display will show the numbers as entered.
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